/Engine/Source/Runtime/Core/Public/Misc/PreloadableFile.h
A helper class for systems that want to make their own registration system. A proxy archive that keeps a shared pointer to the innerFPreloadableArchive, so that the inner preloadablearchive will remain alive until at least as long as the proxy is destroyed.
class FPreloadableArchiveProxy : public [FArchive](API\Runtime\Core\Serialization\FArchive)